Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
21 Jul 2021 06 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone CEMPAKA-21 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source HWRF
Exposed countries China
Exposed population No people in Category 1 or higher
Maximum wind speed 43 km/h
Maximum storm surge 0.3 m (21 Jul 10:30 UTC)
Vulnerability Medium (China)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
HWRF Current 43 km/h 0.3 m 111 mm 0.5
HWRF Overall 137 km/h 1.2 m 746 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

137 km/h

Up to 540 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 21 Jul 2021 06:00 UTC
CategoryCountryPopulation 
Tropical StormChina535,343 

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 18 Jul 2021 18:00 68 - - - - - - -
GREEN 2 19 Jul 2021 00:00 86 -
- - - - - China
GREEN 3 19 Jul 2021 06:00 101 -
- - - - - China
GREEN 4 19 Jul 2021 12:00 119 -
- - - - - China
GREEN 5 19 Jul 2021 18:00 122 -
- - - - - China
GREEN 6 20 Jul 2021 00:00 130 -
- - - - - China
GREEN 7 20 Jul 2021 06:00 137 Few people
- - - - China
GREEN 8 20 Jul 2021 12:00 137 40 thousand
- - - - China
GREEN 9 20 Jul 2021 18:00 104 -
- - - - - China
GREEN 10 21 Jul 2021 00:00 61 -
- - - - - China
GREEN 11 21 Jul 2021 06:00 97 -
- - - - - China
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 21 Jul 2021 06:00 UTC
LevelCountryPopulation 
500-750 mmChina2,982 
250-500 mmChina688,167 
100-250 mmChina, Vietnam, Laos6,959,777
+
China6,688,624 
Vietnam259,155 
Laos11,997 
50-100 mmChina, Vietnam, Laos17,207,553
+
China13,863,612 
Vietnam3,272,364 
Laos71,576 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 18 Jul 2021 18:00 150 -
- - - - - China, Hong Kong
Blue 2 19 Jul 2021 00:00 178 -
- - - - - China, Macao
Blue 3 19 Jul 2021 06:00 138 -
- - - - - China
Blue 4 19 Jul 2021 12:00 274 -
- - - - - China
Blue 5 19 Jul 2021 18:00 277 5 thousand
- - - - China
Blue 6 20 Jul 2021 00:00 290 550 thousand
- - - - China, Macao
Blue 7 20 Jul 2021 06:00 272 Few people
- - - - China, Hong Kong
Blue 8 20 Jul 2021 12:00 189 440 thousand
- - - - China
Blue 9 20 Jul 2021 18:00 228 630 thousand
- - - - China
Blue 10 21 Jul 2021 00:00 328 170 thousand
- - - - China, Vietnam
Blue 11 21 Jul 2021 06:00 694 7.7 million
- - China, Vietnam, Laos




Impact estimation for the next 72h
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StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Huangge, China. This height is estimated for 21 Jul 2021 10:30 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 21 Jul 2021 06:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
21 Jul 2021 10:30 Huangge China  0.3
21 Jul 2021 10:30 Min-chung China  0.3
21 Jul 2021 10:30 Wan-ch'ing-sha China  0.3
21 Jul 2021 10:30 Jiang'ouwei China  0.3
21 Jul 2021 10:30 Cheng'anwei China  0.3
21 Jul 2021 10:30 Fumunchai China  0.3
21 Jul 2021 10:30 Fumuntschai China  0.3
21 Jul 2021 10:30 Baihao China  0.3
21 Jul 2021 10:30 Taiping China  0.3
21 Jul 2021 10:30 Sha-ching China  0.3
21 Jul 2021 10:30 Heping China  0.3
21 Jul 2021 06:00 Cuihengcun China  0.2
21 Jul 2021 06:00 Qishan China  0.2
21 Jul 2021 06:00 Ch'i-ao China  0.2
21 Jul 2021 06:00 Xiazha China  0.2
21 Jul 2021 06:00 Ma-hsieh China  0.2
21 Jul 2021 06:00 Badongxu China  0.2
21 Jul 2021 06:00 Potou China  0.2
21 Jul 2021 06:00 Bengtang China  0.2
21 Jul 2021 06:00 Baisha China  0.2
21 Jul 2021 06:00 Shaoyao China  0.2
21 Jul 2021 06:00 Xingyou China  0.2
21 Jul 2021 06:00 Huangpo China  0.2
21 Jul 2021 06:00 Chiu-wu-ch'uan China  0.2
21 Jul 2021 08:30 Yuen Long Hong Kong (China)  0.2
21 Jul 2021 08:30 Tai Po Hong Kong (China)  0.2
21 Jul 2021 08:30 Tai Po Industrial Estate Hong Kong (China)  0.2
21 Jul 2021 08:30 Fung Yuen Hong Kong (China)  0.2
21 Jul 2021 08:30 Dabu Hong Kong (China)  0.2
21 Jul 2021 08:30 Sha Tau Kok China  0.2
21 Jul 2021 08:30 Cheung Kang Hong Kong (China)  0.2
21 Jul 2021 08:30 Imtin China  0.2
21 Jul 2021 08:30 Cheung Wo Hong Kong (China)  0.2
21 Jul 2021 08:30 Pak Sha Au Hong Kong (China)  0.2
21 Jul 2021 08:30 Long Ke Hong Kong (China)  0.2
21 Jul 2021 08:30 Khitschhung China  0.2
21 Jul 2021 07:00 Luewei China  0.2
21 Jul 2021 07:00 Shalan China  0.2
21 Jul 2021 07:00 Shadi China  0.2
21 Jul 2021 07:00 Dalangwan China  0.2
21 Jul 2021 07:45 Beidou China  0.2
21 Jul 2021 07:45 Chen-hai China  0.2
21 Jul 2021 07:45 Shen-ching China  0.2
21 Jul 2021 08:30 Cheung Sha Wan Hong Kong (China)  0.2
21 Jul 2021 08:30 Tsz Wa Chan Hong Kong (China)  0.2
21 Jul 2021 08:30 Yau Ma Po Hong Kong (China)  0.2
21 Jul 2021 08:30 Sai Kung Hong Kong (China)  0.2
21 Jul 2021 10:15 Nantou China  0.2
21 Jul 2021 06:00 San Shah China  0.2
21 Jul 2021 06:00 Gaoshan China  0.2
21 Jul 2021 06:00 Ta-ch'iu China  0.2
21 Jul 2021 06:00 Beicuo China  0.2
21 Jul 2021 06:00 Guanjing China  0.2
21 Jul 2021 06:00 Cao Yu China  0.2
21 Jul 2021 06:00 Qingfeng China  0.2
21 Jul 2021 06:00 Pingtan China  0.2
21 Jul 2021 08:00 Nanping China  0.2
21 Jul 2021 08:00 Maogang China  0.2
21 Jul 2021 08:00 Macau Macau (China)  0.2
21 Jul 2021 08:00 Taipa Macau (China)  0.2
21 Jul 2021 08:00 Coloane Macau (China)  0.2
21 Jul 2021 08:00 Heung chau China  0.2
21 Jul 2021 06:00 Jiangcheng China  0.2
21 Jul 2021 06:00 Baipu China  0.2
21 Jul 2021 06:00 Dagou China  0.2
21 Jul 2021 06:00 Hsin-chou China  0.2
21 Jul 2021 08:15 Dapeng China  0.2
21 Jul 2021 08:15 Taipang China  0.2
21 Jul 2021 08:15 Shagang China  0.2
21 Jul 2021 08:15 Aotou China  0.2
21 Jul 2021 07:30 Luzui China  0.2
21 Jul 2021 06:00 Pinggang China  0.2
21 Jul 2021 09:15 Chiu-chieh China  0.2
21 Jul 2021 09:15 Shekou China  0.2
21 Jul 2021 06:15 Chixi China  0.2
21 Jul 2021 06:15 Huangchong China  0.2
21 Jul 2021 06:15 Meige China  0.2
21 Jul 2021 06:15 Mashan China  0.2
21 Jul 2021 06:15 Mei-ko China  0.2
21 Jul 2021 06:15 Pingsha China  0.2
21 Jul 2021 06:15 Doumen China  0.2
21 Jul 2021 07:00 Chengcun China  0.2
21 Jul 2021 07:00 Santouzui China  0.2
21 Jul 2021 07:00 Hsi-t'ou China  0.2
21 Jul 2021 07:00 Lengzilin China  0.2
21 Jul 2021 06:00 Fan Kwai Tong Hong Kong (China)  0.2
21 Jul 2021 06:00 Ching-an China  0.2
21 Jul 2021 06:00 Xiaolin China  0.2
21 Jul 2021 06:00 Shuidong China  0.1
21 Jul 2021 06:00 Ch'i-ching China  0.1
21 Jul 2021 06:00 Dianbai China  0.1
21 Jul 2021 06:00 Danchang China  0.1
21 Jul 2021 06:00 Magang China  0.1
21 Jul 2021 07:30 Castle Peak New Town Hong Kong (China)  0.1
21 Jul 2021 07:30 Tuen Mun Hong Kong (China)  0.1
21 Jul 2021 09:15 Baijiao China  0.1
21 Jul 2021 09:15 San-tsao China  0.1
21 Jul 2021 06:00 Diancheng China  0.1
21 Jul 2021 06:00 Rudong China  0.1
21 Jul 2021 07:30 Dayang China  0.1
21 Jul 2021 07:30 Guanghai China  0.1
21 Jul 2021 09:30 Hsia-yung China  0.1
21 Jul 2021 10:00 Renshan China  0.1
21 Jul 2021 10:00 Jen-shan China  0.1
21 Jul 2021 10:00 Fanhe China  0.1
21 Jul 2021 10:00 Pinghai China  0.1
21 Jul 2021 08:45 Tiantou China  0.1
21 Jul 2021 08:45 Tonggu China  0.1
21 Jul 2021 09:00 Lajiwei China  0.1
21 Jul 2021 07:00 Ch'ao-yang-hsien China  0.1
21 Jul 2021 07:00 Haimen China  0.1
21 Jul 2021 07:00 Shantou China  0.1
21 Jul 2021 07:00 Dahao China  0.1
21 Jul 2021 07:00 Aotou China  0.1
21 Jul 2021 07:00 Daitou China  0.1
21 Jul 2021 07:00 Guangao China  0.1
21 Jul 2021 07:30 Doushan China  0.1
21 Jul 2021 07:30 Donghong China  0.1
21 Jul 2021 07:30 Jinghai China  0.1
21 Jul 2021 06:45 Jiesheng China  0.1
21 Jul 2021 06:45 Tianqian China  0.1
21 Jul 2021 06:45 Zhelang China  0.1
21 Jul 2021 07:15 Siwei China  0.1
21 Jul 2021 07:15 Houzhai China  0.1
21 Jul 2021 06:00 Yingluo China  0.1
21 Jul 2021 06:00 Caotan China  0.1
21 Jul 2021 06:00 Longtousha China  0.1
21 Jul 2021 06:00 Yingzai China  0.1
21 Jul 2021 09:45 Houmen China  0.1
21 Jul 2021 09:45 Magong China  0.1
21 Jul 2021 09:45 Jizhongtuo China  0.1
21 Jul 2021 09:45 Shanwei China  0.1
21 Jul 2021 07:30 Tai Long Wan Hong Kong (China)  0.1
21 Jul 2021 07:30 Lau Fau Sha Hong Kong (China)  0.1
21 Jul 2021 07:15 Wanshan China  0.1
21 Jul 2021 07:15 Ky Tan Vietnam  0.1
21 Jul 2021 07:15 Duc Pho Vietnam  0.1
21 Jul 2021 07:15 An Lac Vietnam  0.1
21 Jul 2021 09:00 Tei Tong Tsui Hong Kong (China)  0.1
21 Jul 2021 09:00 Tai Wan Tau Hong Kong (China)  0.1
21 Jul 2021 07:15 Ngau Kwu Long Hong Kong (China)  0.1
21 Jul 2021 07:15 Ham Tin Hong Kong (China)  0.1
21 Jul 2021 07:15 Sz Pak Hong Kong (China)  0.1
21 Jul 2021 07:15 Nam Wan Hong Kong (China)  0.1
21 Jul 2021 07:15 Hoi Pa Hong Kong (China)  0.1
21 Jul 2021 07:15 Lo Tik Wan Hong Kong (China)  0.1
21 Jul 2021 07:15 Tsuen Wan Hong Kong (China)  0.1
21 Jul 2021 07:15 Lo So Shing Hong Kong (China)  0.1
21 Jul 2021 07:15 Ha Kwai Chung Hong Kong (China)  0.1
21 Jul 2021 07:15 Pok Fu Lam Hong Kong (China)  0.1
21 Jul 2021 07:15 Wa Fu Estate Hong Kong (China)  0.1
21 Jul 2021 07:15 Kennedy Town Hong Kong (China)  0.1
21 Jul 2021 07:15 Aberdeen Hong Kong (China)  0.1
21 Jul 2021 07:15 Won Hang Hong Kong (China)  0.1
21 Jul 2021 07:15 Tain Sha Tsui Hong Kong (China)  0.1
21 Jul 2021 07:15 Central Hong Kong (China)  0.1
21 Jul 2021 07:15 Kowloon Hong Kong (China)  0.1
21 Jul 2021 07:15 Wan Chai Hong Kong (China)  0.1
21 Jul 2021 07:15 Chung Hom Kok Hong Kong (China)  0.1
21 Jul 2021 07:15 North Point Hong Kong (China)  0.1
21 Jul 2021 07:15 Chek Chue Hong Kong (China)  0.1
21 Jul 2021 07:15 Crocodile Hill Hong Kong (China)  0.1
21 Jul 2021 09:30 Haikou China  0.1
21 Jul 2021 09:30 Puqian China  0.1
21 Jul 2021 09:00 Chencheng China  0.1
21 Jul 2021 09:00 Hsing-ch'en China  0.1
21 Jul 2021 09:00 Chendai China  0.1
21 Jul 2021 09:00 Hsi-pu China  0.1
21 Jul 2021 09:00 Huqiu China  0.1
21 Jul 2021 09:00 Chengguanzhen China  0.1
21 Jul 2021 09:00 Guleitou China  0.1
21 Jul 2021 09:00 Gangkou China  0.1
21 Jul 2021 09:45 Xiuying China  0.1
21 Jul 2021 08:00 Huanglong China  0.1
21 Jul 2021 08:00 Zhelin China  0.1
21 Jul 2021 11:15 Fugong China  0.1
21 Jul 2021 11:15 Haicang China  0.1
21 Jul 2021 11:15 Gangwei China  0.1
21 Jul 2021 11:15 Songyu China  0.1
21 Jul 2021 11:15 Hsing-lin China  0.1
21 Jul 2021 11:15 Xucuo China  0.1
21 Jul 2021 11:15 Gulangyu China  0.1
21 Jul 2021 11:15 Xiamen China  0.1
21 Jul 2021 11:15 Chen-hai China  0.1
21 Jul 2021 11:15 Daomei China  0.1
21 Jul 2021 11:15 Dianqian China  0.1
21 Jul 2021 11:15 Jiangtou China  0.1
21 Jul 2021 11:15 Zhenhai China  0.1
21 Jul 2021 11:15 Hecuo China  0.1
21 Jul 2021 11:15 Liuwudian China  0.1
21 Jul 2021 07:00 Tai Tam Hong Kong (China)  0.1
21 Jul 2021 07:00 Stanley Hong Kong (China)  0.1
21 Jul 2021 07:00 San Wan Ho Shau Hong Kong (China)  0.1
21 Jul 2021 07:00 Yau Tong Hong Kong (China)  0.1
21 Jul 2021 07:00 Rennie's Mill Hong Kong (China)  0.1
21 Jul 2021 07:00 A Kung Ngam Hong Kong (China)  0.1
21 Jul 2021 07:00 Chai Wan Hong Kong (China)  0.1
21 Jul 2021 07:00 Sau Mau Ping Hong Kong (China)  0.1
21 Jul 2021 07:00 Hok Tsui Wan Hong Kong (China)  0.1
21 Jul 2021 07:00 Chik Sha Hong Kong (China)  0.1
21 Jul 2021 07:00 Hang Hau Hong Kong (China)  0.1
21 Jul 2021 08:45 Gangkou China  0.1
21 Jul 2021 06:15 Paipu China  0.1
21 Jul 2021 06:15 Baimajing China  0.1
21 Jul 2021 06:15 Hsin-ying China  0.1
21 Jul 2021 06:15 Eman China  0.1
21 Jul 2021 06:15 Taan China  0.1
21 Jul 2021 06:15 Hsin-chou China  0.1
21 Jul 2021 11:00 Guankou China  0.1